The stuff I seem to use most is all vg with zero pg in it. Works great in all my atomizers. I recently ran out and got some pg/vg mixed stuff to hold me over (never got a straight answer on the ratio). During this time I picked up some boge cartos and the interim stuff vaped fine in them... Now I got my regular stuff back and I loaded two of my new cartos (that I hadnt used yet) with my all vg goodness. Niether cartos will wick at all... I can look in them while firing my battery and I just see an orange glow (the coil burning) and all I taste is burning coil too.... Bad cartos? Or is there an issue wicking vg in a carto??